30074767661 has 2 divisors, whose sum is σ = 30074767662. Its totient is φ = 30074767660.

The previous prime is 30074767621. The next prime is 30074767693. The reversal of 30074767661 is 16676747003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20856847561 + 9217920100 = 144419^2 + 96010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30074767661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30074767621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15037383830 + 15037383831.

It is an arithmetic number, because the mean of its divisors is an integer number (15037383831).

Almost surely, 2^30074767661 is an apocalyptic number.

It is an amenable number.

30074767661 is a deficient number, since it is larger than the sum of its proper divisors (1).

30074767661 is an equidigital number, since it uses as much as digits as its factorization.

30074767661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 47.

The spelling of 30074767661 in words is "thirty billion, seventy-four million, seven hundred sixty-seven thousand, six hundred sixty-one".